Revenue, Contract Assets and Liabilities and Other Contract Matters - Additional Information (Details)
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3 Months Ended |
9 Months Ended |
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Sep. 30, 2021
USD ($)
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Sep. 30, 2020
USD ($)
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Sep. 30, 2021
USD ($)
Vechicle
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Sep. 30, 2020
USD ($)
Vechicle
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Dec. 31, 2020
USD ($)
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Number of vehicle ferry projects | Vechicle |
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2
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| Reduction of estimated contract price for liquidated damages, amount |
$ 1,200,000
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$ 1,200,000
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$ 600,000
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| Change in estimated margins |
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8,400,000
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| Asset impairments |
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$ 22,750,000
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| Hurricane Ida |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Date of landfall |
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Aug. 29, 2021
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| Impact of Hurricane Ida, description |
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On August 29, 2021, Hurricane Ida made landfall near Houma, Louisiana as a high-end Category 4 hurricane, with high winds, heavy rains and storm surge causing significant damage and power outages throughout the region. Our F&S Facility did not experience significant flood damage; however, the high winds and heavy rain damaged multiple buildings and equipment and resulted in significant debris throughout the facility. As a result of the power outages, damage to buildings and debris, the operations at our F&S Facility were temporarily suspended and we immediately commenced cleanup and restoration efforts. While cleanup and restoration efforts are ongoing, we recommenced our operations before the end of the third quarter 2021.
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| Hurricane Laura |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Date of landfall |
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Aug. 27, 2020
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| Total charges related to deductibles |
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$ 1,200,000
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$ 1,200,000
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| Impact of Hurricane Laura, description |
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On August 27, 2020, Hurricane Laura made landfall near Lake Charles, Louisiana as high-end Category 4 hurricane, with high winds and flooding causing significant damage throughout the region. At our Lake Charles Facility, the storm damaged drydocks, warehouses, bulkheads and our ninth harbor tug project which was nearing completion and subsequently completed in the fourth quarter 2020.
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| Charges related to deductibles within discontinued operations |
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500,000
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500,000
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| Deductible charges associated with, description |
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As a result of the storm, during both the three and nine months ended September 30, 2020, we recorded charges of $1.2 million (of which $0.5 million was reflected within discontinued operations) related to deductibles associated with our insurance coverages, and our preliminary estimates of cost associated with uninsurable damage, primarily for bulkheads.
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| Shipyard |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
1,300,000
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$ 3,000,000.0
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1,300,000
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| F&S |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
1,100,000
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600,000
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3,700,000
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$ 2,600,000
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| F&S | Hurricane Ida |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Asset impairments |
500,000
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500,000
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| Costs associated with clean-up and expediting activities |
900,000
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900,000
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| F&S | Hurricane Ida | Minimum |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Charges related to deductibles with insurance coverages |
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2,000,000.0
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| F&S | Hurricane Ida | Maximum |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Charges related to deductibles with insurance coverages |
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3,000,000.0
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| Marine Docking Structures Project and Material Supply Project |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
$ 1,100,000
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| Marine Docking Structures Project, Offshore Modules Project, Material Supply Project And a Subsea Structures Project |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
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$ 3,700,000
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| Projects, percent complete (percentage) |
89.00%
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89.00%
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| Seventy-Vehicle Ferry |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
$ 1,700,000
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$ 3,300,000
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| Projects, percent complete (percentage) |
78.00%
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78.00%
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| Reserve for loss |
$ 1,000,000.0
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$ 1,000,000.0
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| Forty-Vehicle Ferry |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Number of vehicle ferry projects | Vechicle |
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2
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2
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| Change in estimated margins |
400,000
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0
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$ 300,000
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$ 1,300,000
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| Reserve for loss |
$ 3,300,000
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$ 3,300,000
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| Forty-Vehicle Ferry Vessel Two |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Projects, percent complete (percentage) |
96.00%
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96.00%
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| Forty-Vehicle Ferry Vessel One |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Projects, percent complete (percentage) |
62.00%
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62.00%
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| Paddlewheel Riverboat and Subsea Components Projects |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
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0
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1,500,000
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| Jacket and Deck |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Change in estimated margins |
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$ 600,000
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$ 1,100,000
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| Second Forty-Vehicle Ferry | Hurricane Ida |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Total charges related to deductibles |
$ 400,000
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$ 400,000
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| Second Forty-Vehicle Ferry | Hurricane Ida | Minimum |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Charges related to deductibles with insurance coverages |
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1,000,000.0
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| Second Forty-Vehicle Ferry | Hurricane Ida | Maximum |
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| Long Term Contracts Or Programs Disclosure [Line Items] |
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| Charges related to deductibles with insurance coverages |
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$ 1,500,000
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